Message

It would mean the header and data has been received.
The reason is because 

the target can use ExpStatSN to free the resources used to send the Data-in.

At ERL 0 it is faster to just use the TCP ACK; for ERL > 0 I think there
was 

argument given once that the TCP ACK may not really indicate that the data

was received and hence the ExpStatSN would be used for that purpose (I
don't 

really remember that well though).

Eddy

----- Original Message ----- 

From: "Ken Craig" <kcraig@istor.com>

To: <ips@ietf.org>

Sent: Friday, April 27, 2007 5:23 PM

Subject: [Ips] StatSN question

I have a question about what ExpStatSN means that

I can't find an answer for in the reflector archives

or in any of the RFCs.

I, as an iSCSI Target running at ERL=0, send a

DATA IN PDU with FINAL=1 and a StatSN of 0.  I

receive a SCSI CMD PDU with an ExpStatSN of 1.

Does this mean that the Initiator has received

the PDU BHS and all of the data or is it simply

an acknowledgement that it has received the PDU

BHS?

Thanks,

Ken Craig

_______________________________________________

Ips mailing list

Ips@ietf.org

https://www1.ietf.org/mailman/listinfo/ips

_______________________________________________

Ips mailing list

Ips@ietf.org

https://www1.ietf.org/mailman/listinfo/ips

It would mean the header and data has been received. The =
reason is=20
  because 
the target can use ExpStatSN to free the resources used to =
send=20
  the Data-in. 
At ERL 0 it is faster to just use the TCP ACK; for =
ERL > 0=20
  I think there was 
argument given once that the TCP ACK may not =
really=20
  indicate that the data 
was received and hence the ExpStatSN would =
be used=20
  for that purpose (I don't 
really remember that well=20
  though).

Eddy

----- Original Message ----- 
From: =
"Ken Craig"=20
  <kcraig@istor.com>
To: <ips@ietf.org>
Sent: Friday, =
April=20
  27, 2007 5:23 PM
Subject: [Ips] StatSN question

I have a =

  question about what ExpStatSN means that
I can't find an answer for =
in the=20
  reflector archives
or in any of the RFCs.

I, as an iSCSI =
Target=20
  running at ERL=3D0, send a
DATA IN PDU with FINAL=3D1 and a StatSN =
of 0.=20
   I
receive a SCSI CMD PDU with an ExpStatSN of 1.
Does this =
mean=20
  that the Initiator has received
the PDU BHS and all of the data or =
is it=20
  simply
an acknowledgement that it has received the=20
  PDU
BHS?

Thanks,
Ken=20
  =
Craig

_______________________________________________
Ips=20
  mailing=20
  =
list
Ips@ietf.org
https://www1.ietf.org/mailman/listinfo/ips

_______________________________________________
Ips=20
  mailing=20
  =
list
Ips@ietf.org
https://www1.ietf.org/mailman/listinfo/ips

It would mean the header and data has been received. The reason is because

the target can use ExpStatSN to free the resources used to send the Data-in.

At ERL 0 it is faster to just use the TCP ACK; for ERL > 0 I think there
was 

argument given once that the TCP ACK may not really indicate that the data

was received and hence the ExpStatSN would be used for that purpose (I
don't 

really remember that well though).

Eddy

----- Original Message ----- 

From: "Ken Craig" <kcraig@istor.com>

To: <ips@ietf.org>

Sent: Friday, April 27, 2007 5:23 PM

Subject: [Ips] StatSN question

I have a question about what ExpStatSN means that

I can't find an answer for in the reflector archives

or in any of the RFCs.

I, as an iSCSI Target running at ERL=0, send a

DATA IN PDU with FINAL=1 and a StatSN of 0.  I

receive a SCSI CMD PDU with an ExpStatSN of 1.

Does this mean that the Initiator has received

the PDU BHS and all of the data or is it simply

an acknowledgement that it has received the PDU

BHS?

Thanks,

Ken Craig

_______________________________________________

Ips mailing list

Ips@ietf.org

https://www1.ietf.org/mailman/listinfo/ips

_______________________________________________

Ips mailing list

Ips@ietf.org

https://www1.ietf.org/mailman/listinfo/ips

It would mean the header and data has been received. The reason is because 

the target can use ExpStatSN to free the resources used to send the Data-in. 

At ERL 0 it is faster to just use the TCP ACK; for ERL > 0 I think there was 

argument given once that the TCP ACK may not really indicate that the data 

was received and hence the ExpStatSN would be used for that purpose (I don't 

really remember that well though).

Eddy

----- Original Message ----- 

From: "Ken Craig" <kcraig@istor.com>

To: <ips@ietf.org>

Sent: Friday, April 27, 2007 5:23 PM

Subject: [Ips] StatSN question

I have a question about what ExpStatSN means that

I can't find an answer for in the reflector archives

or in any of the RFCs.

I, as an iSCSI Target running at ERL=0, send a

DATA IN PDU with FINAL=1 and a StatSN of 0.  I

receive a SCSI CMD PDU with an ExpStatSN of 1.

Does this mean that the Initiator has received

the PDU BHS and all of the data or is it simply

an acknowledgement that it has received the PDU

BHS?

Thanks,

Ken Craig

_______________________________________________

Ips mailing list

Ips@ietf.org

https://www1.ietf.org/mailman/listinfo/ips

_______________________________________________

Ips mailing list

Ips@ietf.org

https://www1.ietf.org/mailman/listinfo/ips
_______________________________________________
Ips mailing list
Ips@ietf.org
https://www1.ietf.org/mailman/listinfo/ips